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4.1 V
and PORTV
DD0
DD
(1) V
in the target system is used to sense the level for target system power supply ON/OFF.
DD0
• When V
is lower than 1 V, it is judged that the target system is not connected, and mapping of the target
DD0
memory cannot be performed with a debugger (FCAN cannot be used).
• When V
is 1 V or higher, it is judged that the target system is connected, and mapping of the target
DD0
memory can be performed with a debugger (FCAN can be used).
(2) PORTV
in the target system is not supplied directly to the emulator chip; it is connected to the target voltage
DD
emulation circuit.
• When PORTV
DD
• When PORTV
DD
generated and supplied to the emulator chip.
Target
system
24
CHAPTER 4
of Target System
is lower than 3 V, V
(5 V) in the internal emulator is supplied to the emulator chip.
CC
is 3 V or higher, a voltage of the same potential as PORTV
Figure 4-1. Schematic Diagram of Power Supply Acquisition
IE-703079-MC-EM1
V
(8 pins)
DD
V
PORTV
DD
(66 pins)
User's Manual U15447EJ1V0UM
CAUTIONS
V850/SF1
I/O chip
Relay
(5 V)
CC
Target voltage
emulation
in the target system is
DD
IE-703002-MC
ON/OFF?
Evaluation
chip
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